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Finding the Fourth Proportional to 209,626.80, 314,440.20 and 168,154.80

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Solution

The fourth proportional to 209,626.80, 314,440.20 and 168,154.80 is: 252,232.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,626.80 : 314,440.20 = 168,154.80 : x
  2. Step 2: Convert to fraction form
    209,626.80/314,440.20 = 168,154.80/x
  3. Step 3: Cross multiply
    209,626.80x = 314,440.20 × 168,154.80
  4. Step 4: Simplify right side
    209,626.80x = 52,874,628,942.96
  5. Step 5: Solve for x
    x = 52,874,628,942.96/209,626.80
  6. Step 6: Final answer
    x = 252,232.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.